15601610055 has 16 divisors (see below), whose sum is σ = 24992707680. Its totient is φ = 8310814848.

The previous prime is 15601609981. The next prime is 15601610081. The reversal of 15601610055 is 55001610651.

It is not a de Polignac number, because 15601610055 - 2²² = 15597415751 is a prime.

It is a super-3 number, since 3×15601610055³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 614892 + ... + 639761.

It is an arithmetic number, because the mean of its divisors is an integer number (1562044230).

Almost surely, 2^15601610055 is an apocalyptic number.

15601610055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15601610055 is a deficient number, since it is larger than the sum of its proper divisors (9391097625).

15601610055 is a wasteful number, since it uses less digits than its factorization.

15601610055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255490.

The product of its (nonzero) digits is 4500, while the sum is 30.

The spelling of 15601610055 in words is "fifteen billion, six hundred one million, six hundred ten thousand, fifty-five".